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SMA Sunny Boy SB4.0 On-Grid Inverter

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SMA Sunny Boy SB4.0 On-Grid Inverter
£1,459.00 Incl VAT.
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4kW Solar Inverter with SMA SMART CONNECT Feature.

The worldwide famous and successful Sunny Boy is more than an inverter that generates green-energy. The SMART-CONNECTED Service of SAM offer an easy and comfortable PV system.  The diagnostics software monitors in real-time all the electrical parameters of the solar photovoltaci system and inform the users for any issues. 

It is extremely lightweight thanks to sophisticated design, with optimised cooling heatsink and transformeless operation. The inverter can be combined with any energy-storage solution.

Product Unique Features

  • Plug'N'play installation
  • Commissioning via smartphone or tablet
  • Integrated WLAN (WiFi) and intuitive webserver
  • Automatic monitoring using SMA server
  • Pro-active information and automatic service
  • Free online monitoring
  • PV system data monitored via mobile phone and tablet.
Voltacon has in stock the complete range of SMA  inverters at the most competitive prices in the market. 

SMA Smart Connected - A Must Have Gadget ! 

Using the free monitoring system from SMA, the inverters are watched via the Sunny Portal. In case of fault, the SMA system will notify the user/installer via email. You will know promptly that your system needs urgently attention. That helps to make sure you will not loose significant energy production. 

The diagnostics will be conveyed automatically to SMA, a specialist will rectify the problem quickly. 


 Download Technical Specifications File

 Download Technical Specifications File


Max. Input Voltage (V) 600
Min. MPP-voltage (V) 110
Max. MPP-voltage (V) 500
Max. Generator power (kW) 4,2
Rated power AC (kVA) 4
Max power AC (kVA) 4
Max. Efficiency (%) 97
Europ. Efficiency (%) 96,5
Protection class IP65
Length (mm) 470
Width (mm) 435
Height (mm) 176
Weight (kg) 16
Interface 1 -
Interface 2 -
Max. String number 4
Network monitoring ENS
Number of MPP trackers 2
Model transformerless
Display without display
Reactive-power capable Yes
Feed-in phases 1
Step-up Converter Yes
Variable Input Voltage No
Max. Power DC input 1 (kW) 4,2
Max. Power DC input 2 (kW) 4,2
Max. Input Current, Input 1 (A) 15
Max. Input Current, Input 2 (A) 15


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